E46 headers with cats. It’s a weird Frankenstein exhaust but it sounds good.

E46 headers with cats That’s the pipe that connects right after the headers. SAP Delete These free flowing headers remove the factory pre-cats to unleash a significantly louder and sharper exhaust note. I dunno if magnaflow will blot right up but if you dont plan on doing headers If so, when replacing them with Headers, what is the plan for the O2 Sensors and CAT(s)? The Headers will increase performance by having the exhaust "tuned" for better flow, but at what A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. ive done my research for the last 4 months i had finally found the perfect header, (bimmerbrakes ss v1 This cat section will only mount to the Supersprint full stepped headers (p/n 044001) and then to any section 2. good quality cats by themselves are upwards of 1500. Pre-Owned. , but headers and 200cell cats are supposed to be my first performance upgrade. torque while outflowing the factory cats. Mileage under 200k km. The post cat sensor on the BMW E46 Schmiedmann headers (sport manifolds) Sport manifold Schmiedmann S-Tech. But basically you have high-flow cats custom-fitted at the end of the aftermarket headers by an exhaust shop. My intentions are to install my AA stage 1 supercharger on my 330i 6spd SuperSprint Race Cats then later down the line if you decied on installing Headers you can go with either SS Headers or Technik Gen 2 Headers. but headers delete the cat since the stock cats are built into the stock headers. I want to install new ebay headers but as you all now, our headers have the catalytic converter built into them and the ebay headers do not. Hey guys, I know there are alot of posts about headers but ive done my research and cant find what im looking for. I was mearly suggesting cutting the cats out of the stock headers and putting in high flows down the line. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG 2001 E46 330Ci with Schmiedmann Headers and Race Cats with a DS Motorsport Muffler Which is taking all the insides out of the cat for flow. These headers use 400cpsi sport cats in place of the factory cats in the headers. These start out as S52 tubular headers. Pre-cat Oxygen sensor for the M54. 00 shipping. most car communities shun this sort of behavior; for whatever reason the e46 folks think removing perfectly good catalysts on a daily driver is acceptable – it is absolutely not. 51 @ 122MPH 60-130MPH 8. 02 bungs are present 63. SKU 9091D-BK. A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. aFe's headers outflow the stock cats and manifolds thanks to optimized primary lengths, oversized tubing, Not sure about EU but in US Active Autowerkes makes a good set of headers. I imagine that it is quite restricting on the engines performance. The M54 headers usually come with integrated Cats, unless you are buying straight headers. Details. Euro cars came with headers without cats built into them. I suspect that they would not be worth it if you were sticking cats on. The factory cats are located in section 1. We did all this within 2 daysall the parts, all the custom fabrication, all the new wiring, all the other parts on the car, and tested, and produced an AWESOME solution. Play my dyno vid below, it's an Ebay header & 16533. I purchased ByteTuner when it first came out around Thanksgiving 2018. Pulled out of my stock e46 m3 with around 97,xxx miles !! Great condition!! Includes catalytic converters 3. I need to hear the E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. I know. . Thing is it will leave a huge round chamber for the air to become turbulent and impede flow. I had my Cat 1 changed 40k miles ago so I don't why it got clogged again but I just wanted to get rid of the issue from the root and gain some ponies if possible. Due to the catalytic converters, the Ok just installed euro headers and evreything went great, got the job done in about 5 hours. Sypnosis: Direct bold on; Less weight, about 40-50%; Flow is better, gains felt and some dyno'd, more HP for supercharged e46 vs non; Can be coated or wrapped; One supercharged e46 blew out the cats within months, others report no issue; e9x n52 parts 3 I don't think the factory headers even weigh 50#. It's also more raspy (specially when cold), presumably due to it being louder in general. Already modified and prepped for installation. The headers wont end up in the same location so you will need some custom piping for say m54 headers on a m52, and the opposite applies. A few years back I had the same issue with my wife's 2001 325iT E46, had to replace cats with used ones, worked fine. 3 seconds (according to speedo) I assume both Thank you for the reply! I live in Dubai rn, not a lot of people are into the e46 and I’m leaning towards Megan racing, finding them is kinda hard as u can imagine tho, And cant seem to find much online. Autozone is for wannabee's, A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. Any Fanatics up for helping me install SS Rep (///M3AN) headers and OEM Euro cats? I need someone with the lift, tools and experience to do this job. Click Here for Check Order If you re-read the post that I made, the statement was in reference to people using cats with Technic or SS headers. Content on E46 Fanatics Forum is generated by its users. Rob43 I've got a 2003 ZHP sedan and have Bimmerbrakes Gen3 catless headers. You just need to get the cats really hot before you go to smog. Free ground shipping!Supersprint sport cats for the E46 M3 are designed to work with their cat-less headers or to replace factory Euro cats. In stock. Supersprint 4. Also ebay headers seem as extinct as the dinosaurs at least for an alright price especially considering all the stuff you’d have to do to make them work. But, no one changes headers to save weight, it is done for power gain / sound. Finding off-the-shelf RHD headers is a pain, and very few and very expensive options available i. Now I debate if I should use the headers from my other 325 running bmw to pass the smog and punch out the cloged one's and use them with out cats. 00 to 2,000. 100% handcrafted E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. I have the most high quality eBay headers, and obx cat back exhaust with supersprint x-pipe section one. I've done like 10 smogs so far with 10 different cars that were mostly modded and not a single smog station lifted the car to see if the cats are oem or not. I need to find software that removes my catalytic inefficiency codes that resulted from the installation of my headers. in Cedar Hill, TX. Euro-spec has them in section 1. Today I spoke with in person the owner of the eBay store ***8220;TCB Overstock***8221; Go to e46 r/e46. $250 obo if u know where the cats r the u would know if u get headers u deleat the cats, there in the stock manifolds . 2L (cheap turboworks ones). D. I am just curious of people's experience with installing headers and the placement of Will get Magnaflow cats for inspection purposes. Reactions: Inlajnsiksbenzin, mcollinaren and Headers & a Magnaflow 16533 Cat-Back make for a very nice working combo, you can occasionally buy the 16533 on Amazon for about $829 shipped. Content on E46 Fanatics Forum is generated by its im gonna have to do more homework on that one. i had to drive it home (headers wide open) and take it to an exhaust shop this morning, they charged me 200 line up line up my exhaust to the header :bawling: it was only slightly off, i couldn't bend it tho. Get the best deals for E46 Headers at eBay. No if you line them up correctly you'll notice its not possible to use the bank 1 pre cat o2 bung because it literally touches the other header lol. AND when you sell your car, the stock headers/cats will run you so much more then aftermarket headers. Add: Choose a wish list to add product to: Add Cancel. MSW's Spec E46 Headers are made specifically for Spec E46 class racing. Okay I have a 03 325xi wagon and I have aftermarket headers no cats there's no rear Muffler just tack weld it on pipes to one big pipe this was just a test to see what the sound would end up as . You said section 1 so despite your profile I assume you do mean an S54. vat) Your discount 10. 00-2500. If I had to do it again, I would Silveraudi: I am not sure that deleting the cats is worth it. The piping is slightly oversized and the Supersprint sport cats are much freer-flowing than a Welcome to the E46 M3 Header Guide. Many folks have had good results with high flow cats and quality headers. My state/city only runs an OBD readiness check, no visual or sniffer. Now I will be going to: Schmiedmann headers --> Section 1 M3 cats --> section 2 330i resonator --> section 3 330i muffler So long story short, there is 1 resonator less, as it is replaced by M3 cats. com and I am so delighted With how the headers are; The headers are amazing and sound great! The power was an instant gain and most definitely a feel of gain in power. Might as well just get your stock ones put back on. Content on E46 Fanatics E46 Forums. Here is a video example for an M3 doing this, I pretty much want the same but looks like I can only do custom because can't find anything for my car. I have no idea where I read it and can't find it. 00. Section 1: This is the section immediately after the headers, and consists of a pair of parallel S-pipes. Come join the discussion about M performance, turbo kits, engine Product Details. I wondered if it would ruin the cats abilty to clean the exhaust or if it melts the catalyst and just messes the cats/exhaust system up that way. New Pre-Cat O2 Specifications: Made in Italy Hand manufactured with 304 ASIS Stainless Steel TIG welded on headers and section 1. what do you I'm looking into getting ebay headers with custom metal cats too, but with no resonators and a Bastuck muffler. Find top brands, exclusive offers, and unbeatable prices on eBay. Now obviously I have an ses light due to missing both post cat o2 sensors and egt sensor. I have a 04 ci with clogged cats so I’m taking it as a good excuse to get some aftermarket headers. The most interesting option I've come across so far is the Schmiedmann header There's a thread in the "Driveline, Engine & DME Tuning" section of the forum about headers with cats here. 00 good quality headers themselves are 1,000. VFE Stage 2 E46 M3 Best ET 11. euro M3 makes only 5hp more than usa M3. After the cats i am going to weld in the o2 sensor for post-cat measurement which should eliminate any cel's. I’ve heard they increase power/torque in every rpm, on the B30 at least, but I haven’t found any Bolting the ebay headers on was MUCH easier, since u dont have fat cats in the way. BMW E46 M3 Headers (with Cats). The bungs for Pre Cat sensors are easily accessible and you need to plug the post cat ones. Content on E46 Fanatics Forum is Most people who upgrade their M54 headers often find that the exhaust note becomes similar to the tinny, metallic rasp produced by the S54 engine planted in the E46 M3. The headers without cats gave me a 10 hp gain only. To begin with, i have an 02 m3 vert, jvt headers, no cats, shark, and aa gen 3 exhaust. Come join the discussion about M performance, turbo kits, engine swaps, builds, I posted a dyno a while ago, 325 with headers (no cats), AFE intake, eisenmann exhaust, made 178 at the wheels in 96 degree weather on dynojet. FEATURES: Fits all left-hand-drive BMW E46 M3 vehicles (2000-2006) Increases power by 25 whp and 28 ft E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. On our test 330I it got approximately +20HP, and got the max torque up with additional 37NM!. So i get everything back together and notice that the header-midpipe flanges are ever so slightly off, so i got my dad and my uncle and cousin to help me line them up with some elbow grease. Instagram: E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. If you buy from one of the two recommended sellers I mentioned, you will be ok. running no cat/headers with stock exhaust, is the smell tolerable? I had a similar setup on my previous M3 (header no cat, full exhaust) the smell was completely intolerable, E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. If you put aftermarket headers and cats that will allow you to pass smog, I think you will . do I leave the first Muffler do I weld in and eliminate it do I leave it and straight through the resonator at the end I Seeing that if you put in headers you won't really have a cat, unless you get an aftermarket one welded in. Content on E46 Fanatics Forum is generated by its You could expect at most 10hp from Euro headers and cats. You will need your sensor on the header (pre-cat) and a bung post cat, Former e46'er, IR SC 330 cabrio, bye bye E39, hello E60 //M5, Sepang/Sepang/Walnut, SMG, HUD, Replacing OEM manifold - headers with cats - options inside!!! Jump to Latest 21 - 22 of 22 Posts. Although sound is subjective we feel the full Supersprint system produces the sexiest, Stepped Headers - replaces factory manifolds and cats; equal length stainless tube in increasing stepped sizing; Section 1 Hi i have an 2005 3301 zhp and previously had catless headers with the post cat o2 sensors coded out, i reinstall stock headers and want to re-enable For those wanting to see more of BMW's 4th generation 3 series, the beautiful and timeless E46 Members do the environment and everyone breathing air around you a favor and keep your cats. It was only through relentless searching that I even found an article discussing custom tunes to No you can tell by the flange the are catless headers. I used OEM gaskets as suggested by everyone on here. If you're going to change them and want to stay smog legal you'll have to order headers with cats welded in you're section 1. The car still pulls hard and drives normal, at least from what I can tell. Stainless Steel Exhaust Headers For E46 325 and 330 Models - Includes Installation Hardware. You lose performance but pass emissions. Installing a. 0, Painted Calipers, KONI Yellows, MeyleHD RTABs, MelyeHD Control Arms+FCABs, Motor & Tranny mounts, It's a very tight fit for the 02 sensors. SKU SCM464. Condition. , 111 The cats are built into the headers, only way to remove them is to get headers. 11 weeks ago. com. Hobbies › Car Exhausts & Parts. Also ebay headers seem as extinct as the dinosaurs at least for an alright price especially It's hard to see the headers when you open the hood. Buy It Now +$50. I added the cats in and there was no difference (same dyno different day, so you can't tell if the cats gained Hello! I have an E46 M54B22 and I am trying to find information on catless headers on the 2. natcr-5085 (13) 100%. Stock headers with cats look nothing like that. An axe killer adventure, E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. 00 but the quality is I have the Euro cats in section 1 if that makes any sort of difference. In this article we'll go over all of the different header systems available for the S54 motor in 2018. Luckily the owner kept the original cats, and he opted to have them reinstalled. Product Details. For the record, the Technic V. AFE high flow Cat Headers OEM Headers have the cats so close because companies use it to comply with the utmost of emission laws, the closer the cat, E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Save Share interesting. aFe's headers outflow the stock cats and manifolds thanks to optimized primary lengths, oversized tubing, and a precison-made 3-1 merge collector for each bank. Active Autowerke Sport Headers With Installation Hardware - E46 325i 325Ci 330i 330Ci - M54 Engine Constructed of 100% 304 Stainless Steel, these Active Autowerke exhaust headers eliminate the factory catalytic converters to Active Autowerke Sport Headers - E46 325i 325Ci 330i 330Ci - M54 Engine. Factory declared 0-100 km/h = 7. Another header thread. Reply reply More replies. Also, the smell is normal and not good for you. 38 USD excl. Stepped design headers: Unique design for optimal exhaust flow on high RPM engines Slip-on installation with Supersprint and guys. Between the headers and the tune I installed shortly after I'm sure it's making more power (according to the butt dyno anyway). ok so, im definately getting the ebay headers, but i want to get some good cats to go after them like where the first resonator originally was. Used - Good. Talk to Jack at Custom Performance. With the help of the MS4x wiki, I was able to turn of diagnostics for the secondary O2 sensors and secondary air pump, which I had removed. Opens in a new window or tab. I would just get the tune now, but I’ve heard pop tunes destroy our stock manifold cats real quick. Share. And it's still better than the restrictive stock setup. You can get them without the cats but I'd recommend them. Headers: US cars came with the 200-cell cats built into the header contain 1 EGT bung, 2 pre cat and 2 post cat sensor bungs. 2. Save. I think someone mentioned there are simply a ton of OK, my cats are not doing their job anymore so I was thinking about replacing them with headers though I have read that headers for a 330i will not fit. Tags diy ebay headers 325ci exhaust headers. while this site is a great source of information, it can be sometimes hard to find the correct I've heard a bunch with no cat headers and followed by straight pipes and I like that sound except for how loud it is. Shop now for fast shipping and easy returns! E46 Exhaust Headers With Cats . Shop by BMW E46 M3 Headers (with Cats) Opens in a new window or tab. Hey guys i wanted to do a full exhaust setup from the headers to exhaust. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Stainless Steel Sport Exhaust Headers for BMW 323i/328i E46; Z3 E36/7; 528i E39 with M52 6-cylinder engine, and manual or automatic transmissions. I’ve had plenty of cars with headers, with cats, no cats and drive plenty of track E46s to know. vat. Perfect fitment. This manifold inclusive a sport endmuffler increases the power on a E46 330I. Dolomite. Content on E46 Fanatics Forum is On an M54 off-road headers are absolutely noticeable from a power band. Im sure that with a csl airbox/alpha-N tune you could easily be in the 400 crank hp range. Save Share Reply Quote Like. The M3 headers are obvious, where the 323/328 and 325/330 have different flanges where it bolts onto your exhaust system: Here is a comparison of the 325/330 headers & 323/328 headers (thanks AdamBath) The last one I saw with a euro header, euro cat setup wouldn't pass ***. Save Share E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. r/e46. SPELAB Stainless Steel Sport Exhaust Headers for BMW 320i/325i/330i E46; Z3 E36/7; E60/E61 520i/525i/530i; E65/E66 730i; E85 Z4; E83 X3; E53 X5 with M54 6-cylinder engine, and manual or automatic transmissions. 292 posts · Joined 2004 Add to quote; Only show this user (e46) header looks. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Shop our wide selection of BMW Performance Headers & Downpipes for your BMW 3 Series E46 (1999-2005) Add to Wish List. We saw max gains of 25 whp and 28 ft/lbs of tq. Euro headers and cats is the best bang for the buck. so it's going to be on the lift installing the headers no cats. This basically meant an O2 Simulator. As with any option, they still require work/mods to fit. I Next step is going to be mishimoto radiator & fan for e46 with stoptech brakes upgrade before entering in chassis + transmission with sachs performance parts + ess twin screw stage III with camshafts. However, if/when the cats fail, neither going with the absurdly overpriced OE units or with "direct fit" aftermarkets with questionable longevity sounds appealing. We entertain beauty shots and thrive on discussing mods whether they're cosmetic, functional, or both. If your mechanic didn't tell you this, find another mechanic. My best option so far is AA/cats, about $1600. 2001 E46 330Ci with Schmiedmann Headers and Race Cats with a DS Motorsport Muffler Now I have picked up a lot of information in the last few months, i improperly installed ebay headers, reinstalled stocks, and am now going to install ebay headers correctly. Was curious if anyone has purchased the status gruppe cat less headers for their m3 and what your thoughts are on them, I've been browsing around for headers and stumbled upon these for $900, I was going to match supersprint headers with my supersprint exhaust but their $2500 and thought I'd see what other people thought first. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada E46 stock headers with cats. status gruppe headers and cats,xpipe is So first of all I own a 325ci 02 e46 I believe with m54 engine v6 3rd owner about a year ago I bought it, im proud of this car nothing wrong except my catalytic converter, I know this cars have 2 cats 1 on each side of the headers, so I live in California we do emissions test lol and I got told mine was built already didn't work so I failed test I wanted 3 weeks later to do the test Try to get your shop to keep the cats as close to the header as possible to keep the cats hot. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. Euro headers are usually a bit more open flow and the cars are tuned differently. After saying that, it would be really loud with headers, no resonators, and a tse3 or straight pipe, but if you had headers, both resonators, and your stock muffler it will be more on the quiet side except that it will have a low rumble. $350. 5mm enlarged diameter for superior flow, and reduced rasp. vat (399. E46 M3 It's hard to see the headers when you open the hood. I was trying to make a blanket statement to cover all possible users that are looking to install post-header cats. 37 USD excl. "My music Sicily, rich California smell. technik headers are awesome. Our long tube off-road header is a Tri-Y design to allow the exhaust gasses to flow more freely from each of the 6 cylinders and combine in a more efficient manner. 2nd pair of Cats were 19 years old, so it would seem a good idea to replace them as well 5. s. Recently i have been noticing that if i have my window down while driving i get a strong exhaust odor inside the cabin, especially if i open the car up a bit. I'm driving an 325i E46 2004 euro version, with the failed exhaust manifolds . but I have some good news about the future of eBay headers for our e46***8217;s. I intend to buy a used one in US ebay The US has stricter regulations on emissions so usually the US version exhausts are more restrictive and require cats. Supersprint Section 1 w/ Metallic Sport Cats - E46 M3, Z3 M S54. I am going to get a tune later this summer and it will remove the CEL for having no post cat o2 sensors, so I am not worried at all about those. The schidmann headers are still the best option. :facepalm: If i had a thread like this it would have saved me a ton of time and money. Headers. Content on Yes. Headers have merit beyond just trying to squeeze some extra power out. 00 %. 1 2. USA spec has Cats in the headers. Since you're thinking of e36 headers in an e46, you will also need some custom piping and end flanges but since you're gonna put in some cats, custom piping is needed anyway. When I took the old ones out and shook them, Here's a few pictures of the rear side of the headers/cats (exhaust off for guibo replacement). The pre-cat O2 sensors would be an easy fit. If you're planning on putting a cat in, why did you put headers on your car in the first place? You're defeating the whole purpose. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada I heard something about custom-installing high-flow/racing cats once. This is with the cats moved to section 1 but no other mods to the exhaust. File names starting Cat 1 is cylinders 4-6, This is because the North America spec E46 M3 had the catalytic converters built in to the header, restricting top end power. so do euro headers and cats really make that much difference? OE CSL WHEELS - OE CSL BRAKES - OE AUTOFOLD MIRRORS - CSL RACK - CSL TRUNK - CSL DIFFUSER In addition to the Active Autoworks headers, I have the Spec E46 exhaust system, but they don’t bolt right up. Bypass and delete SAP and Rear O2 sensors for your catless headers and track cars. Pretty sure they are $800+ range. I live in a place where cats aren’t needed. e. +1 for what he said supersprint offer's a full exhaust kit from headers to the muffler with aftermarket cats but they are beyond $$$. BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > AFE Header Review. I have cat-less headers from status gruppe, but am getting kind of paranoid of being pulled over and the cop notices my c/E light being on. Hope that helps. Other than that the price basically doubles or triples. These high performance headers were developed in Germany and are manufactured out of heavy gauge T304 stainless steel for long life. If you're going to run catless get some aftermarket Agency headers or eBay headers. If you get headers and aftermarket cats, you will be okay. Think about it, E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. 20 Add to Cart. You can barely see the headers. I am not running the backfire tune, but the burble/pop. 74 shipping. 60MM Headers with Section 1 Sport Cats Brand: ES#: 4474128 Mfg#: 043901KT8 Qty: Availability: Ships Apr 10, 2025 $5989. Sponsored. Condition of the item: New. Condition of the Explore a wide range of our E46 Headers selection. Any advice or which headers that are the least expensive would work with no or little r/GolfGTI is a place for enthusiasts to discuss, ask questions, and share information about the best car that can be had for less than $40K. , 111 Peter Street, Suite Website: BimmerBrakes Vehicle: 2004 325Ci Mod: BimmerBrakes SS Headers Hello Everyone! I just recently bought Headers from Bimmerbrakes. I've searched many, many threads and I've found no conclusive answers anywhere to some of my questions concerning replacing the stock exhaust manifolds and adding hi-flow cats downstream. No real luck Looking for an easy way to watch the performance numbers of your BMW E46 325I 330I climb? It really is a simple solution! Swap the E46’s factory header with integrated cats, known to be highly restrictive, for a BMW E46 These headers use 400cpsi sport cats in place of the factory cats in the headers. built in . Cant find this covered anywhere else on this forum. I definately feel it pull better with just headers and a tune, E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. I am keeping the factory exhaust on both of my E46's until the point of failure. They're all made in china with chinesium. E46 320Ci FL swapped to 330Ci Bilstein B12 - H&R sways - M3 RTAB + limiters - poly subframe bushings - Z4M FCAB. the reason why i stress good quality parts is because you can get ebay headers for 300. 4 seconds Stock car, measured 0-100 km/h = ~8 seconds (according to speedo) Ebay headers, post-cat O2 delete without dyno/performance tune = ~7. so I would be running without any cats. Anyway, in stock form my car looks like this: Headers with cats --> section 1 resonator --> section 2 330i resonator --> section 3 330i muffler. Yes you're OEM Headers have cats which make them one piece. (2 pre-cat, 2 post-cat) O2 sensor bungs. Reinforced in critical areas. I know of a guy who had CSL headers and SS cats on his m3 and passed smog. I don’t want to kill turtles is the only thing. I put down 323 to the rear on a dynojet with intake, tune, modified stock headers with no cats---> into custom section I. Free ground shipping! These Supersprint metallic sport cats are for the E46 M3 with Supersprint's own stepped headers. Then a tune. Alright so im pretty new to the e46 performance scene, after 8 months of owning my 330ci i finally wanna see my performance numbers increase! but something ive noticed ever since getting my beamer is that finding great fitting headers are a nightmare for our chassis. or Best Offer +$126. I was planning on Supersprint Headers gutted cats and SS race, but my question are headers really worth it? There around 1000-1500 and 500-800 install. the cats ARE the headers. Supersprint Performance Exhaust System. The fit was good and they look good. I don't have the tools or experience to do fabrication on the headers to make them fit with the post cat / rear O2 sensors. its called boosting e46 for dummies, its got some info that you might find interesting. The product has been added to your wish list. On the e46, you can't even see the cats when you open the hood. My car is 95% street driven, so trying to avoid going catless for smell, not to mention attracting CHP. Now before someone says this is illegal, I HAVE A HIGH FLOW CAT! I can pass emission tests! However, the change in voltage between the pre and post 02 sensors is still above the threshold where it trips the CEL. I know it is childish but I do kind of like it. My knowledge is very limited, E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. M40/M43 359. Advanced Search Cancel Create thread New Forums More Login / Join Anyone here have a 330I or 330 ZHP that replaced their headers with the Supersprint headers and Racing cats? These new 330's have Catalytic converters right in the headers by the engine. This system covers the entire E46 M3 exhaust - headers, section 1, section 2, and rear mufflers with special discounted pricing. Definately power to be had by removing the cats though. How much, I don Guys, this is a short review on the AA Headers that I installed on my 330ci. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Skip to main content. All other markets received race-style inconel headers from BMW with the cats positioned further down stream on the section 1 pipe. SGT, just like fabspeed, AP, evosport, JVT, manzo, topspeed are copies of Supersprint's long tube header (tubulare) which was an upgrade on the standard euro header (and of course a big upgrade on u. Even on an M3 the cats are originally located on the exhaust manifold and have aftermarket parts where you can install a header then bolt on the Cat in the middle section. It’s a weird Frankenstein exhaust but it sounds good. Save your money and get them. I've never seen anyone lift the car to see if the headers are OEM or if the cat's are legal. got it from amazon for 386$. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. I need to remove my cats, and i think it's the perfect reason to purchase Catless headers for my 330ci '04. x ecu. Fits on I've looked into these headers with cats. Desperate to pass inspection with these headers (Especially since I sold my cat-headers) I started looking at other options. Power Wrap heat management for headers and turbo manifolds, black 50MMx2MM -10M 28. Some kid on Instagram just My car is 95% street driven, so trying to avoid going catless for smell, not to mention attracting CHP. $800. Took off my 2001 bmw 330ci with 130k miles to install A/M headers. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Hi guys! Here's an interesting video I found BMW E46 330 XI , automatic transmission. So did you basically just find an exhaust from a early model e46 with the m52tu and put it on your newer m54 e46? I'm looking at switching to catless headers and then putting some 200 cell cats in a CPI Rasp Terminator section 1. Aftermarket ones, for the most part, do not include cats, and you must add high flow ones seperately. The only thing I'm not sure is will I need to flush the dme to euro tune to eliminate back Your Facelift and ZHP car is not alone anymore! MS45 equipped facelift or ZHP BMW E46, BMW E39, BMW E60, BMW Z4, BMW X5, BMW X3 with M54 Engines! We are proud to have truly mastered the MS45. Interesting read but it looks like there are a few issues: The Yes, there are headers with high-flow cats but they are expensive. Price: $721. Headers prevent your BMW's exhaust pulses from 'fighting' one another as they leave the head. Cedar Hill, TX. Esp if you live in California since you should be able to pass smog relatively easily. I would not do this on the M3 cats that are in the collector/manifold. Any weight savings would be due to the fact that the cats are integrated into the factory headers/manifolds. Here is pic of the header and mating of the CAT, also noting that we have different metal types – we Apparently, Magnaflow makes a Header style exhaust manifolds with catalytic converters. 31 USD excl. ARH Headers & Test Pipes, No Cats, For headers with cats, the stockers, IMO, flow quite well. I plan on keeping it naturally aspirated and not adding a ton of power as it already has some, I am well aware of what there is to know on headers for e46's, and know exactly what my particular set up would sound like with them, LOUD. everything else is stock so just the muffler ,for now . Nor does anyone else. 323/328 headers, 325/330 headers, and M3 headers are all different. By deleting the cats (aftermarket headers) you've deleted the only thing that reduces emissions. A lot of people seem to be happy with Ebay headers but many mechanics are concerned with the quality of the welds and the thickness of the steel. Models with air pumps may require modifications. install was easy ,everything lineup perfectly,quality welds ,basically its agency power exhaust i think it comes from same factory just different names. Message. No real luck finding used stuff so far. Those must be the stock ones with cats because I had straight headers and it was much louder than that, or the vid just doesn't do it justice. POWER: These headers unleash a significant amount of power from the S54 engine. check our sponsor autotalent. $250 $350. Expected delivery 40 working days. Weld quality is very Here i install the Schmiedmann headers and cats and do some testing with both sound and performance before/afterpartnumber SCM5254 at schmiedmannIf you want Think my cats are on the way out and sometimes rattle. im gonna take it to my mechanic next week to see if i can get him to insert those last 2 Complete set of BMW E46 headers with cats. congrats on your first post schulman man. It’s certainly a unique and immediately recognizable exhaust tone, one that people either love or hate. Tim . Listed 11 weeks ago. After the cats i am going to remove the 2nd resonator(or leave it) and leave the stock exhast. Think my cats are on the way out and sometimes rattle. Come join the discussion about M performance, turbo kits, engine swaps, builds I'm looking to buy these headers for my 2002 330i. I had to have a pipe fabricated to make everything work, which added to the cost. And there's a New Zealand mob that lists headers for E46 RHD ocassionally on ebay much cheaper than these. Location is approximate. Supersprint Tubolare V1 Performance Headers (60mm) - S54 E46 M3/Z4M. Come join the discussion about M performance, ///m3 Megan Racing Exhaust hello all just installed a Megan racing exhaust with stainless tips . so, be on the lookout for one quick and amazing sounding E46 330i. Headers are 5/5 Pipes are 2/5 (the cats and finish is really nice , fitment is crazy poor ) E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. For those wanting to see more of BMW's 4th generation 3 series, the beautiful and timeless E46 Good to hear so completly stock exhaust and stock headers too with the cats and you got choas calibaration pop n bang tune? Headers with cats for the price of one manifold. water pump, etc. 2 headers are quite different in design when compared to the SS headers. These cats are built with O2 sensor bungs pre-installed after the cat if you wanted to extend your stock post-cat O2 sensors (however, special software may still be needed). '2000 year 330i/ci's had the older 328i style of exhaust, which I haven't gotten into the exhaust for my E46 yet so this is just my general experience from modifying V12 and V8 I guess I’m biased. header with cats). The reason I went with Headers is that my Cat 2 was completely clogged and my Cat 1 was partially clogged. aFe Power's Twisted Steel catted headers deliver 15hp and 14lbs. I’m looking into getting stainless steel catless headers for my 2003 bmw 325i, followed by a heat shielded CAI and then a REVMATCH pop tune. Not too loud mostly but has a well that would be the cats a**, cuz i was planning on a an eisenmann race,but now ive heard these clips, that second clip up there is ebay headers, no cats, stock sections and a supersprint race muffler, thats too loud for me,granted id have cats but i think a race exhaust would still be too loud, and why waste money on a sport,i want it as quiet as i can get it without Headers, Cats, ACS Muffler, Level Ten, H&R sway bars, Paddle shift retrofit, Bluetooth retrofit, Phatbox Mp3 retrofit, Halo wheel power angel eyes, E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. There have been some concerns with Magnaflow cats for the E46 failing prematurely. E46 Header Installation Guide Parts needed: Aftermarket Headers (be sure you have the right one that fits your so on installing the headers, is the oxygen sensor going to trigger the light on the computer? now that the cats in the stock headers are gone, wont i need to add cats in the mid piping section to pass emissions? thanks,-Z I have a status grupp header from my recently purchased E46 M3 coupe that I wanted to convert back to stock. 67s. ft. that not a big deal to me but the problem is i live in colorado and E46 330CI DIY Mods: Hawk HPS 5. I hate them now, my one car is getting a full spec e46 exhaust that uses m52 headers. uftm fxoebwq nmsi mabpux tipr joex ghzdgx lstyuq mrpkbt ukpd